ChamplainLayer: libchamplain Reference Manual

## ChamplainLayer ChamplainLayer — Base class of libchamplain layers |

## Functions

void | champlain_layer_set_view ()
ChamplainBoundingBox * | champlain_layer_get_bounding_box ()

## Types and Values

struct | ChamplainLayer

## Object Hierarchy

        GObject
        ╰── GInitiallyUnowned
            ╰── ClutterActor
                ╰── ChamplainLayer
                    ├── ChamplainMarkerLayer
                    ╰── ChamplainPathLayer

## Implemented Interfaces

ChamplainLayer implements ClutterContainer, ClutterScriptable, ClutterAnimatable and AtkImplementorIface.

## Description

Every layer (overlay that moves together with the map) has to inherit this class and implement its virtual methods.

## Functions

### champlain_layer_set_view ()

    void
    champlain_layer_set_view (ChamplainLayer *layer,
                              ChamplainView *view);

ChamplainView calls this method to pass a reference to itself to the layer when the layer is added to the view. When the layer is removed from the view, it passes `NULL` to the layer. Custom layers can implement this method and perform the necessary initialization. This method should not be called by user code.

#### Parameters

layer | a ChamplainLayer |
view | a ChamplainView. | [nullable]

Since: 0.10

### champlain_layer_get_bounding_box ()

    ChamplainBoundingBox *
    champlain_layer_get_bounding_box (ChamplainLayer *layer);

Gets the bounding box occupied by the elements inside the layer.

#### Parameters

layer | a ChamplainLayer |

#### Returns

The bounding box.

Since: 0.10

## Types and Values

### struct ChamplainLayer

    struct ChamplainLayer;

The ChamplainLayer structure contains only private data and should be accessed using the provided API

Since: 0.10